Clamping device for clamping a fastener

A clamping device for clamping a fastener, comprising:

• a clamping jaw;
• a first biasing member for biasing the clamping jaw;
• a clamping body having a central axis, the clamping body being formed with a notch for receiving the clamping jaw;
• and
• a driving assembly for driving the clamping jaw to clamp the fastener, the driving assembly being supported on the clamping body,
• wherein the driving assembly further comprises:
• a first member which can rotate and move axially relative to the clamping body;
• and
• a second member which can be driven by the first member to move axially, without rotating, relative to the clamping body so as to push the clamping jaw to clamp the fastener,
• wherein the clamping body comprises a receiving portion for receiving the fastener and a supporting shaft, and the receiving portion is provided with a guiding groove, wherein the notch is formed on the receiving portion and communicated with the guiding groove, and an inner wall of the second member is provided with a pushing block for pushing the clamping jaw and mating with the guiding groove so as to guide the second member to move axially with respect to the clamping body.